ORIGINAL: Iflyit
I have one of these and can't seem to get the power or rpm out of it I hear others are getting. The engine is new and has about a 1/4 of a gallon thru it, I had a 22x10 on it as the manual says that is the prop for break in and could only get 5800 rpm. I then put a Vess 23A on it and now can get 6100-6200 rpm out of it but I hear others are getting 6500-7K even when new? I have played with the adjustments and they seem correct, I also was using 25:1 oil as thats what the manual calls for but now have moved to around 35:1.
Other than not enough power/rpm it seems to run OK.
Any suggestions?
Iflyit,
I have a very similar experience as you regarding my TOC 53MM. I have run a couple of gallons through mine now and I have setup on 40:1 using a Xoar 22 x 8. The best numbers I've seen to date have been 6350 RPM. Not nearly the RPM's that others are seeing using the Wildhare hop-up kit and old style mufflers. Mine does have one of the newer mufflers on it and I am running just the stock muffler on my setup.
The throttle range is O.K. on mine, idles great, full-throttle is solid, but lots of burble at just about 3/4 range. I have tried working the needles to remove this but have yet to succeed in getting a smooth transition. I also have mine mounted in a 17.5 lb. airplane and at this point I am near full-throttle through most of my flight (mixed 3D/precision). Hovering requires near full-throttle as well and there is absolutely no way I would bring this airplane for any kind of DOD flying with the rpm's that I am currently getting on this setup.
This motor was acquired from Cermark as well.